Patents Assigned to Mitsubishi Chemical Corporation
  • Publication number: 20240101502
    Abstract: A production method of one or both of (meth)acrolein and (meth)acrylic acid using a heat-exchange-type reaction vessel having a reaction tube at an inner part is provided, the method including causing an oxidation reaction of a raw material supplied to the reaction tube while circulating a heat medium to an outer side of the reaction tube to produce one or both of (meth)acrolein and (meth)acrylic acid, in which the reaction tube has i layers, which are a plurality of catalyst layers having different catalyst charging amounts per unit volume, in a longitudinal direction of the reaction tube, provided that i is an integer of 2 or more, and the oxidation reaction satisfies Expression (1). ??0.275(mol·K·h?1·W?1)??(1) Provided that (AAA) is satisfied. ?=F×(m1/?j=1imj)/(U×A). . .
    Type: Application
    Filed: November 21, 2023
    Publication date: March 28, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventor: Keisuke Baba
  • Publication number: 20240105449
    Abstract: A conductive C-plane GaN substrate has a resistivity of 2×10?2 ?·cm or less or an n-type carrier concentration of 1×1018 cm?3 or more at room temperature. At least one virtual line segment with a length of 40 mm can be drawn at least on one main surface of the substrate. The line segment satisfies at least one of the following conditions (A1) and (B1): (A1) when an XRC of (004) reflection is measured at 1 mm intervals on the line segment, a maximum value of XRC-FWHMs across all measurement points is less than 30 arcsec; and (B1) when an XRC of the (004) reflection is measured at 1 mm intervals on the line segment, a difference between maximum and minimum values of XRC peak angles across all the measurement points is less than 0.2°.
    Type: Application
    Filed: September 29, 2023
    Publication date: March 28, 2024
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Yutaka MIKAWA, Hideo FUJISAWA, Tae MOCHIZUKI, Hideo NAMITA, Shinichiro KAWABATA
  • Publication number: 20240100504
    Abstract: A synthetic adsorbent, where a maximum value of a differential pore volume under a pressure condition of 0.5 to 30.0 psia is greater than 0.05 mL/g. A method of measuring the differential pore volume includes reducing a pressure in a sample container where the synthetic adsorbent that has been dried is placed to 10 Pa or less, mercury is degassed by reducing the pressure to 10 Pa or less, and the sample container is filled with the mercury at a pressure of 0.5 psia, measuring a mercury intrusion amount when the pressure in the sample container filled with the mercury is increased from 0.5 to 30.0 psia, and calculating the differential pore volume by dividing an amount of an increase in the mercury intrusion amount when a first-stage pressure calculated based on the mercury intrusion amount measured in the measuring is increased, by a measured amount of the synthetic adsorbent.
    Type: Application
    Filed: December 8, 2023
    Publication date: March 28, 2024
    Applicants: Mitsubishi Chemical Corporation, Kyowa Kirin Co., Ltd.
    Inventors: Yoshiya TASHIRO, Shouhei OHARA, Jun TAKEHARA, Takashi ISHIHARA, Shinsuke KIKUCHI
  • Publication number: 20240107870
    Abstract: Provided are: a highly durable polymer having a high hole-injection/transport capacity; and a composition for an organic electroluminescent element, which contains the polymer.
    Type: Application
    Filed: November 1, 2023
    Publication date: March 28, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yanjun LI, Tomokazu UMEMOTO, Hideki GOROHMARU, Koichiro IIDA, Kouji ADACHI
  • Publication number: 20240101775
    Abstract: A prepreg including a thermosetting resin composition and a self-assembled carbon fiber bundle impregnated with the thermosetting resin composition.
    Type: Application
    Filed: December 4, 2023
    Publication date: March 28, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Masashi Ikeda, Kazuki Tsujikawa, Takeshi Ishikawa, Jun Matsui
  • Publication number: 20240101898
    Abstract: A phosphor having a favorable emission peak wavelength, narrow full width at half maximum, and/or high emission intensity is provided. Additionally, a light-emitting device, an illumination device, an image display device, and/or an indicator lamp for a vehicle having favorable color rendering, color reproducibility and/or favorable conversion efficiency are provided. The present invention relates to a phosphor including a crystal phase having a composition represented by a specific formula, and when, in a powder X-ray diffraction spectrum of the phosphor, the intensity of a peak that appears in a region where 2?=38-39° is designated as Ix and the intensity of a peak that appears in a region where 2?=37-38° is designated as Iy, the relative intensity Ix/Iy of Ix to Iy is 0.140 or less, and a light-emitting device comprising the phosphor.
    Type: Application
    Filed: December 4, 2023
    Publication date: March 28, 2024
    Applicants: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tomoyuki Kurushima, Yuhei Inata, Naoto Hirosaki
  • Patent number: 11939855
    Abstract: A diverting agent and method for temporarily filling fractures. The diverting agent contains a powder-like polyvinyl alcohol-based resin (P1) and a pellet-like polyvinyl alcohol-based resin (P2), and has an adsorption coefficient kc of 0.01 or more and 1 or less.
    Type: Grant
    Filed: April 20, 2023
    Date of Patent: March 26, 2024
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shusaku Mandai, Yasuhiro Hirano, Yuya Kanamori, Kenji Furui, Keito Ikebata, Tomoki Onishi
  • Patent number: 11939504
    Abstract: The present invention aims to provide a scintillator which has a short fluorescence decay time, whose fluorescence intensity after a period of time following radiation irradiation is low, and which shows largely improved light-transmittance. A scintillator represented by the following General Formula (1), the scintillator including Zr, having a Zr content of not less than 1500 ppm by mass therein, and being a block of a sintered body. QxMyO3z:A . . . (1) (wherein in General Formula (1), Q includes at least one or more kinds of divalent metallic elements; M includes at least Hf; and x, y, and z independently satisfy 0.5?x?1.5, 0.5?y?1.5, and 0.7?z?1.5, respectively).
    Type: Grant
    Filed: June 23, 2022
    Date of Patent: March 26, 2024
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Koji Hazu, Kentaro Horibe, Tetsuya Kawano, Keiji Yamahara, Shunsuke Kurosawa, Akira Yoshikawa
  • Patent number: 11939413
    Abstract: An acrylic resin powder soluble in acetone, including a multi-stage polymer (M) that includes a polymer (B) obtained by polymerizing a monomer mixture (b) containing methyl methacrylate and an alkyl (meth)acrylate ester (mb) in the presence of a polymer dispersion that contains a polymer (A) obtained by polymerizing a monomer mixture (a) containing an alkyl (meth)acrylate ester (ma), in which an alkyl group in the alkyl (meth)acrylate ester (ma) has 4 to 8 carbon atoms, an alkyl group in the alkyl (meth)acrylate ester (mb) has 4 to 8 carbon atoms, a glass transition temperature of the polymer (A) is 20° C. or lower, a glass transition temperature of the polymer (B) obtained by polymerizing the monomer mixture (b) is 55° C. or higher, and a mass average molecular weight of the multi-stage polymer (M) is 10,000 or more and 300,000 or less.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: March 26, 2024
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Shogo Miyai, Toru Kondo
  • Patent number: 11942601
    Abstract: A nonaqueous electrolyte solution, which contains a compound represented by the following general formula (A), and (1) at least one compound selected from the group consisting of a nitrile compound, an isocyanate compound, a difluorophosphate, a fluorosulfonate, a lithium bis(fluorosulfonyl)imide and a compound represented by the following general formula (B), or (2) a cyclic carbonate compound having a fluorine atom in an amount of 0.01% by mass to 50.0% by mass based on the total amount of the nonaqueous electrolyte solution. (In formula (A), R1 to R3 may be mutually the same or different and represent optionally substituted organic groups having 1 to 20 carbon atoms.) (In formula (B), R4, R5 and R6 respectively and independently represent an alkyl group, alkenyl group or alkynyl group having 1 to 12 carbon atoms that may be substituted with a halogen atom, and n represents an integer of 0 to 6.
    Type: Grant
    Filed: June 14, 2022
    Date of Patent: March 26, 2024
    Assignees: Mitsubishi Chemical Corporation, MU IONIC SOLUTIONS CORPORATION
    Inventors: Eiji Nakazawa, Yoichi Oohashi, Minoru Kotato, Takamichi Mitsui, Takayuki Aoshima, Takeshi Nakamura
  • Patent number: 11939452
    Abstract: A polyvinyl alcohol film is provided, which is highly transparent, and excellent in antistatic property and cold-water solubility. The polyvinyl alcohol film contains: (A) a polyvinyl alcohol resin; and (B) an ester of a C2 to C4 fatty acid (b1) and a polyhydric alcohol (b2); wherein the ester (B) is present in an amount of 1 to 4,000 ppm.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: March 26, 2024
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Shouichi Kani
  • Patent number: 11943997
    Abstract: Provided are: a highly durable polymer having a high hole-injection/transport capacity; and a composition for an organic electroluminescent element, which contains the polymer.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: March 26, 2024
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yanjun Li, Tomokazu Umemoto, Hideki Gorohmaru, Koichiro Iida, Kouji Adachi
  • Publication number: 20240092956
    Abstract: Provided is a polymer including a constituent unit (1) based on a monomer represented by Formula (1), in which a content of a constituent unit based on a monomer having a polycyclic structure is 35 mol % or less. In Formula (1), R1 represents a hydrogen atom or a methyl group, A1 represents a linking group including an ester bond, or a single bond, where A1 has no tertiary carbon atom, and Z1 represents an atomic group forming a sulfur-containing cyclic hydrocarbon group having 3 to 6 carbon atoms, which includes a carbon atom bonded to A1, and —SO2—.
    Type: Application
    Filed: November 6, 2023
    Publication date: March 21, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kazuaki Mukai, Takeru Jo, Yoshihiro Kamon, Satoshi Sakuma, Ryuichi Ansai
  • Publication number: 20240093251
    Abstract: The present invention relates to a method for producing an amide compound from a nitrile compound in the presence of a biocatalyst having nitrile hydratase activity, wherein the amide compound is efficiently produced by suppressing a deactivation of the biocatalyst, and improving the rate of conversion reaction from the nitrile compound to the amide compound.
    Type: Application
    Filed: August 10, 2023
    Publication date: March 21, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Takafumi Yamaguchi, Norifumi Hagiya, Makoto Kano, Kazuya Takanashi
  • Patent number: 11931927
    Abstract: A main object of the present invention is to provide beneficial improvements relating to a method for producing a fiber reinforced plastic product, the method including curing while pressurizing a prepreg preform by using a core having a fusible part as means for pressurizing.
    Type: Grant
    Filed: September 3, 2021
    Date of Patent: March 19, 2024
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Satoshi Kaji, Tsuneo Takano, Takashi Honma
  • Patent number: 11931990
    Abstract: Provided is a composition for a sound insulating sheet member, a sound insulating sheet member, and a sound insulating structure body with excellent sound insulating performance. A sound insulating structure body including: a plurality of convex-shaped rubber-elastic resonant portions; and a sheet-like support that supports the resonant portions, wherein the resonant portions have a storage modulus G? obtained from a composite curve of dynamic viscoelasticity according to ISO 6721-4 of 100 MPa or less at 25° C. and 10 kHz, and the areal density of the support is 1.0 kg/m2 or less.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: March 19, 2024
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Haruki Koshitouge, Daichi Okuno
  • Patent number: 11936044
    Abstract: A carbon material for a non-aqueous secondary battery containing a graphite capable of occluding and releasing lithium ions, and having a cumulative pore volume at pore diameters in a range of 0.01 ?m to 1 ?m of 0.08 mL/g or more, a roundness, as determined by flow-type particle image analysis, of 0.88 or greater, and a pore diameter to particle diameter ratio (PD/d50 (%)) of 1.8 or less, the ratio being given by equation (1A): PD/d50 (%)=mode pore diameter (PD) in a pore diameter range of 0.01 ?m to 1 ?m in a pore distribution determined by mercury intrusion/volume-based average particle diameter (d50)×100 is provided.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: March 19, 2024
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shunsuke Yamada, Nobuyuki Ishiwatari, Satoshi Akasaka, Daigo Nagayama, Shingo Morokuma, Koichi Nishio, Iwao Soga, Hideaki Tanaka, Takashi Kameda, Tooru Fuse, Hiromitsu Ikeda
  • Publication number: 20240084055
    Abstract: Provided is a monomer composition containing methyl methacrylate, and at least one compound of methyl pyruvate and methyl 2-methylbutyrate.
    Type: Application
    Filed: November 17, 2023
    Publication date: March 14, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Hiroaki ITO, Yusuke HIRANO, Issei TANIGUCHI, Manabu ISOMURA, Kouichi KANEMORI
  • Publication number: 20240083835
    Abstract: Provided is a monomer composition containing methyl methacrylate and methyl propionate, in which the methyl propionate content is more than 200 ppm by mass and 50,000 ppm by mass or less relative to the total mass of the monomer composition.
    Type: Application
    Filed: November 17, 2023
    Publication date: March 14, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Hiroaki ITO, Yusuke HIRANO, Issei TANIGUCHI, Manabu ISOMURA, Kouichi KANEMORI
  • Patent number: 11929478
    Abstract: A filling member is interposed between pouch cells of a battery pack, the filling member has a first surface orthogonal to a thickness direction thereof and a second surface opposite to the first surface, ?d1 and ?d2 defined below satisfy formulas (1) and (2) below, respectively, ?p satisfies formula (3) below, and ?d1>?d2 holds: (1) ?d1?3.0×10?3 (m2·K)/W, (2) ?d2?8.0×10?3 (m2·K)/W, (3) 0.5 K/W??p1?1000 K/W, and (4) 0.5 K/W??p2?1000 K/W. ?d1 is heat transfer resistance when the average temperature of one of the first and second surfaces exceeds 180° C., ?d2 is heat transfer resistance when the average temperatures of the first and second surfaces both do not exceed 80° C., ?p1 is heat transfer resistance when the average temperature exceeds 180° C., ?p2 is heat transfer resistance when the average temperatures do not exceed 80° C.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: March 12, 2024
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tomohiro Kawai, Hiroki Hayami